A few come to mine for me, Jay Stewart and Rod Roody.
A couple of soap opera and game show announcers fit this trope- Bill Wolff, who announced for Another World from its debut in 1964 until (I believe) some time in the '80s, I really like the way he says "and now, the continuing storyyy of Another World." And Johnny Olsen, who's TPIR work was also golden too. Charlie O Donnell on Wheel of Fortune was great too. Loved the way he said "Wheeeeeeeeeeeeeeel of Fortune!"
Don't forget Keith Jackson. Whoa, Nellie!
Vin Scully, forever the announcer for the Dodgers.
And countless voice actors (RIP): Mel Blanc, Daws Butler, June Foray, Christine Cavanaugh, Don Messick, Casey Kasem, Paul Winchell, Janet Waldo...
Network voiceovers: Mel Brandt, who did "The Doctors" for many years and also the NBC peacock bumpers before shows
Sports: Curt Gowdy and Jim Simpson during the same era too.
How can anyone mention NBC without saying "Thank you, Don Pardo."
And then there's the unforgettable guy that everyone tries to forget: Hah-wad Co-sell.
Yeah, Pardo is on my list, for his Price is Right work. Not to mention Jeopardy...